jeans/LibreELEC.tv
jeans/LibreELEC.tv
1
0
Fork 0
mirror of https://github.com/LibreELEC/LibreELEC.tv.git synced 2025-07-28 13:16:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

linux: add patch to fix broken audio over optical on alc662+

Browse Source 
many thanks to MrXIII for testing
This commit is contained in:
Stefan Saraev 2013-02-15 21:10:23 +02:00
parent 0e45435dfb
commit 72080b8d9d
1 changed files with 93 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

93
packages/linux/patches/3.7.8/linux-990.06-hda-fix-broken-audio-over-optical-on-alc662.patch vendored Normal file
View File

@ -0,0 +1,93 @@
From 09c206b7ee18b50d81916697150bd510f198716d Mon Sep 17 00:00:00 2001
From: Stefan Saraev <stefan@saraev.ca>
Date: Fri, 15 Feb 2013 20:19:48 +0200
Subject: [PATCH] hda: fix broken audio over optical on alc662+
original commit:
> commit 2626d16bbdedcd64c6af3c519aecd5a6f2356e58
> Author: Takashi Iwai <tiwai@suse.de>
> Date: Fri Dec 14 10:22:35 2012 +0100
>
> ALSA: hda - Always turn on pins for HDMI/DP
>
> commit 6169b673618bf0b2518ce413b54925782a603f06 upstream.
>
> We've seen the broken HDMI *video* output on some machines with GM965,
> and the debugging session pointed that the culprit is the disabled
> audio output pins. Toggling these pins dynamically on demand caused
> flickering of HDMI TV.
>
> This patch changes the behavior to keep the pin ON constantly.
>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=51421
>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
for now we revert the above commit, until we have a propper fix
---
sound/pci/hda/patch_hdmi.c | 18 ++++++++++++++----
1 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 791ef80..2587119 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -431,11 +431,9 @@ static void hdmi_init_pin(struct hda_codec *codec, hda_nid_t pin_nid)
if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, pin_nid, 0,
AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
- /* Enable pin out: some machines with GM965 gets broken output when
- * the pin is disabled or changed while using with HDMI
- */
+ /* Disable pin out until stream is active*/
snd_hda_codec_write(codec, pin_nid, 0,
- AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
+ AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
}
static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t cvt_nid)
@@ -1343,6 +1341,7 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
struct hdmi_spec *spec = codec->spec;
int pin_idx = hinfo_to_pin_index(spec, hinfo);
hda_nid_t pin_nid = spec->pins[pin_idx].pin_nid;
+ int pinctl;
bool non_pcm;
non_pcm = check_non_pcm_per_cvt(codec, cvt_nid);
@@ -1351,6 +1350,11 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
hdmi_setup_audio_infoframe(codec, pin_idx, non_pcm, substream);
+ pinctl = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ snd_hda_codec_write(codec, pin_nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl | PIN_OUT);
+
return hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
}
@@ -1370,6 +1374,7 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
int cvt_idx, pin_idx;
struct hdmi_spec_per_cvt *per_cvt;
struct hdmi_spec_per_pin *per_pin;
+ int pinctl;
if (hinfo->nid) {
cvt_idx = cvt_nid_to_cvt_index(spec, hinfo->nid);
@@ -1386,6 +1391,11 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
return -EINVAL;
per_pin = &spec->pins[pin_idx];
+ pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
+ AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ snd_hda_codec_write(codec, per_pin->pin_nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL,
+ pinctl & ~PIN_OUT);
snd_hda_spdif_ctls_unassign(codec, pin_idx);
per_pin->chmap_set = false;
memset(per_pin->chmap, 0, sizeof(per_pin->chmap));
--
1.7.2.5